What’s new
Texas Instruments (TI) introduced its most affordable C2000 real-time microcontrollers (MCU), enabling engineers to design products with industry performance at a lower cost. The F28E120SC and F28E120SB MCUs deliver 30 percent faster computing power compared to previous C2000 MCUs for single motor and power factor correction systems, helping transform the performance of home appliances, from washing machines and dishwashers to vacuum cleaners and power tools.
Powered by TI’s proprietary InstaSPIN field-oriented control (FOC) software and algorithms, these new MCUs enable smoother, quieter and more efficient motor performance. Their capabilities – including high-speed sensorless FOC, high-torque zero-speed startup and vibration compensation – deliver responsive motor control for everyday applications.
Why it matters
Today’s consumers demand appliances and power tools that operate as efficiently, smoothly and quietly as possible. Yet, historically, system designers have had to compromise by using MCUs with less computing performance and analogue integration to meet cost targets.
The F28E12x series of MCUs helps solve this challenge by delivering the performance needed to enable motor-control features at a lower price than competing devices. These MCUs eliminate additional components by integrating TI’s C28x digital signal processor core and industry analogue peripherals, including a high-speed analogue-to-digital converter and programmable gain amplifier, helping simplify designs and lowering costs.
“Since their introduction in the 1990s, TI C2000 MCUs have allowed designers to control both simple and complex motors with low latency and high reliability,” said Vivek Singhal, Vice President and General Manager, Application-Specific Microcontrollers at TI. “Adding fully featured, ultra-low-cost MCUs to the C2000 portfolio enables new markets to access the industry-leading real-time performance that TI is known for. Using this technology, appliance and power-tool manufacturers can deliver seamless, quiet motor operation, previously considered a luxury, at an affordable price point.”
Moreover, TI’s F28E12x series facilitates fast execution of the sensorless FOC algorithm, enabling motor speeds over 120,000rpm, or 2kHz electrical frequency. The ability to run a motor at high speeds reduces gear transition noise and improves reliability, enabling engineers to design products with smooth, quiet operation. The MCUs can also run a vibration compensation algorithm to achieve up to 60 percent speed ripple reduction, counteracting the acoustic noise and vibrations caused by an imbalanced load in applications such as washing machines.
